How to Have a Smart Child

I recently read an article about different things that factor into your child's IQ. Everyone wants to believe their child is a genius.
My husband will tell you that I totally buy into all the things that can make my child (well, now children) smart. I bought the dvd's that can teach my baby to read. I have several different puzzles, books, flash cards, and school style books to teach my son the alphabet and numbers. I buy games to try to re-enforce learning. My favorite channels to turn to for cartoons are the ones that teach him things.
Honestly, there's only one thing we as parents can do to ensure our children are smart. We can teach them the love of learning. It's not hard. Encourage questions (as annoying as it can sometimes be). Spend time with your child learning something new by doing things like looking up a question on the internet or reading a book.
What age is the best time to do this? Well, now. Okay, it's hard to do this with a 7 week old who doesn't really have questions. But with a 5 year old, it's easy. The earlier you start, the easier it will be.
Okay. Maybe my advise isn't the greatest. My child isn't a genius. I haven't tested his IQ level so he really might be. But I do have a child who comes up with some fairly decent questions, who loves to read, who wants to cook, and who asks to do more school work. Albeit, his "school work" is easy since it's basically like coloring, but it's how preschoolers to do work.